He worked for Ireland rugby for six years and was the official doctor on two British and Irish Lions tours. He was also a member of the organising committee for the 2012 Olympics and is on the RFU disciplinary panel.

Lewin and O’Driscoll forged a close professional and personal relationship during their time at the club. In fact, a club insider told TGG that the duo and their families were currently on holiday together.

Coaches Tony Colbert, Boro Primorac, Neil Banfield and Gerry Peyton have also left the club, along with kit man Paul Johnson, who had been with the Gunners for 36 years.

WHEREVER Roberto Martinez has been as a manager, he's had Richard Evans by his side. The Welshman tells us about a journey that has taken in promotions, an FA Cup final and the latter stages of a World Cup.